I attended the Wolfmother, Thenewno2, and heartless bastards concert a couple days ago. The show was amazing.
Wolfmother, of course, was epic. They played the favorites, white unicorn, woman, as well as some others, and saved Joker and the theif for the last song of their encore. Wolfmother is incredibly inergetic onstage, and they do a great live show. They have it all: great music, great vibe, and genuine interaction with the crowd. At the end of Joker they knocked over the drum set, and the lead singer crowed surfed into the pit!
Thenewno2 are a great band with a unique sound. I didn't know them ahead of the concert, but I really enjoyed their set and I plan to look into thier music further.
I honestly wasn't thrilled with The Heartless Bastards. They had a nice, pleasant sound, one song (a new one - Mountain) was especially nice. But on the whole I found them pretty boring. Kind of like a mix between tegan and sara (but with a deeper female voice) and every alt rock band that's on the radio. They also stayed pretty still and in their original places pretty much the entire time, which made watching them rather boring...I thought they had finished their set like five times before it was over.
Bottom line: awesome show